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<div id="version" align=right><b>slepc-3.7.3 2016-09-29</b></div>
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<H1>BVSetMatrix</H1>
Specifies the inner product to be used in orthogonalization.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcbv.h"
PetscErrorCode BVSetMatrix(BV bv,Mat B,PetscBool indef)
</PRE>
Collective on <A HREF="../BV/BV.html#BV">BV</A>
<P>
<H3><FONT COLOR="#883300">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>bv </B></TD><TD> - the basis vectors context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>B </B></TD><TD> - a symmetric matrix (may be NULL)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>indef </B></TD><TD> - a flag indicating if the matrix is indefinite
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
This is used to specify a non-standard inner product, whose matrix
representation is given by B. Then, all inner products required during
orthogonalization are computed as (x,y)_B=y^H*B*x rather than the
standard form (x,y)=y^H*x.
<P>
Matrix B must be real symmetric (or complex Hermitian). A genuine inner
product requires that B is also positive (semi-)definite. However, we
also allow for an indefinite B (setting indef=PETSC_TRUE), in which
case the orthogonalization uses an indefinite inner product.
<P>
This affects operations <A HREF="../BV/BVDot.html#BVDot">BVDot</A>(), <A HREF="../BV/BVNorm.html#BVNorm">BVNorm</A>(), <A HREF="../BV/BVOrthogonalize.html#BVOrthogonalize">BVOrthogonalize</A>(), and variants.
<P>
Setting B=NULL has the same effect as if the identity matrix was passed.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../BV/BVGetMatrix.html#BVGetMatrix">BVGetMatrix</A>(), <A HREF="../BV/BVDot.html#BVDot">BVDot</A>(), <A HREF="../BV/BVNorm.html#BVNorm">BVNorm</A>(), <A HREF="../BV/BVOrthogonalize.html#BVOrthogonalize">BVOrthogonalize</A>()
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/sys/classes/bv/interface/bvbasic.c.html#BVSetMatrix">src/sys/classes/bv/interface/bvbasic.c</A>
<BR><A HREF="./index.html">Index of all BV routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
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